I like local/regional cookbooks. Also I ahve found that some better restaurants offer really great cookbooks.
I like books but some of the recipes are online also.
Julia Childs books cover French pretty well.
Here is just a small sample of some of my favorites: The New Orleans/Louisiana Books are primarily Creole style foods not Cajun.
http://www.jfolse.com/
http://www.neworleans.com/food/cookb...-cookbook.html
http://www.neworleans.com/food/cookb...-cookbook.html
http://www.neworleans.com/food/cookb...d-recipes.html
http://www.harpercollins.com/books/N...=9780060160104
http://www.hudsonsonthebend.com/stor...?category_id=2